Periodic Trends in Properties
Atomic Properties Statements
Which of the following statements are correct?
A. The process of the addition an electron to a neutral gaseous atom is always exothermic
B. The process of removing an electron from an isolated gaseous atom is always endothermic
C. The 1st ionization energy of the boron is less than that of the beryllium
D. The electronegativity of C is 2.5 in CH4 and CCl4
E. Li is the most electropositive among elements of group I
Choose the correct answer from the options gives below